When switching carriers with a Cricket Wireless phone, you need to make sure your device is unlocked and you have no outstanding fees on your device. You also need to make sure you are switching to a carrier compatible with your GSM Cricket device. Your Cricket phone will only work with a selection of carriers so you need to check first before you commit to a new plan or switching carriers.

All unlocked phones work on carriers that use GSM networks. Carriers that use GSM networks include AT&T, T-Mobile, Cricket, MetroPCS, Simple Mobile and Tracfone. Most foreign carriers also use GSM networks. You will need to use a SIM card from a GSM provider to get service for your unlocked phone. Unlocked Cell Phones. If you have an unlocked phone, you can typically use it with other cell. Your phone is probably unlocked. *Cricket can't guarantee that. All unlocked phones work on carriers that use GSM networks, which include AT&T, T-Mobile, Cricket Wireless and more. Some popular prepaid carriers that also use GSM include AT&T GoPhone, NET10, TracFone and Simple Mobile. You will need to use SIM cards from a GSM provider in your unlocked phone to get service.

Use this link to. This compatibility checker will show you which carriers you can use your device with.

Remember that you can port your number to your new carrier - make sure that you don't disconnect or cancel service with Cricket Wireless until you've got your new plan set up with the new carrier (otherwise you may lose your number) You can see all of the carriers that you can switch to here - Sprint and Verizon run on CDMA technology, T-Mobile and AT&T(Cricket Wireless) operate on GSM - as a general rule, you won't be able to use your GSM phone on a CDMA network (some new iPhone 6s and Nexus phones may however work but you need to check).

Step Contact a Sprint customer service representative and ask him how far along you are in your contract. It is best to cancel your Sprint service at the end of your contract, because you will have to pay termination fees if you cancel in the middle of your contract. Consider the amount of money that you will save when you switch phone providers, to determine whether the termination fees are worth it. Step Ask the Sprint customer service representative to unlock your cell phone. This is the simplest way to get an unlock code. Sprint will unlock your cell phone for use with other service plans if you are up-to-date on your Sprint bill.

Step Cancel your contract while you are in contact with the Sprint customer service representative. Once your phone has been unlocked by the customer service representative, request that she cancel your contract. Be sure to get your phone unlocked before you request to cancel your service or the customer service representative may refuse to unlock your phone. Step If the customer service representative refuses to unlock your phone, you can purchase a Sprint unlock code from a third party alternative. Connect to the Internet via a web browser and purchase an unlock code.

How To Unlock Iphone When Disabled Without Restoring more. The reference section of this article includes websites where you can purchase unlock codes for cell phones. Step Contact Cricket and purchase a pay as you go plan. Cricket wireless has a variety of plans to choose from and you can purchase a pay as you go plan that will most fit your needs. You can make the purchase through Cricket's website, a Cricket store or through a third party. Step Notify Cricket that you wish to activate your old cell phone.

Cricket will give you a new SIM card and activate your cell phone so that it works with its system.